ocean

/ˈoʊʃən/

a large body of water constituting a principal part of the hydrosphere

中文释义：海洋；大海

The Pacific Ocean is the largest and deepest ocean on Earth.

太平洋是地球上最大最深的海洋。

Plastic pollution in the ocean poses a serious threat to marine life.

海洋中的塑料污染对海洋生物构成严重威胁。